Improvement in mechanical movements for sewing and other machines



'UNITED STATES PATENT OFFICE.

JAMES HANLEY, OF NEV YORK, N. Y.

IMPROVEMENT IN MECHANICAL MOVEMENTS FOR SEWING AND OTHER MACHINES.

Specilication forming part of Letters Patent No. 18,845, dated December15, 1857.

T0 all whom, t may concern,.-

Be it known that I, JAMEs HANLEY, o1" No. 14 Sixth Avenue, in the cityand State of New York, have invented a new and useful device forpreventing sewing and other machines moving in any but the requireddirection, of which the following is a speciiication.

A great variety of sewing-machines work by the intervention of cams, sothat the operation of sewing can only be ei'i'ected when these cams movein one direction; but as some machines are worked by the foot, crank,and iiywheel, like an ordinary lathe, they are difficult to manage whenit is necessary to stop or to start. At such times when the crankhappens to be on the wrong side of its center, the wheels in connectionare moved backward, to the injury of both the machine and the work. Itis to obviate these evils that I have iliade the improvement which I nowset forth.

Figurel of the accompanying drawings represents a sewing-machine with myimprovement, the improvement being shown in red ink 5 Fig. 2, a portionof such machine enlarged, and showing the construction of theimprovement.

A A represent part of the machine-frame; B, the driving-wheel. The spacebetween the wheel B4 and the frame A A forms a conical recess, in whichis placed a roller, r. w is a wire, one end of which passes through theroller r, forming its axis. The other end of the wire is secured to theframe-work of the machine. This wire has just elasticity enough to holdthe roller fr in close but easy contact with the wheel B on one side andthe frame A A on the other. Vhen thus arranged, the

wheel B can only be moved in one direction,

and any attempt to move it in the contrary is instantly arrested by theroller r dropping into the narrow part of the recess or jamb.

Fig. 3 is an application of the same contrivance to both sides of awheel, thus avoiding lateral strain.

The respective letters refer to the same parts y substantially in themanner and for the purpose as herein set forth.

JAMES HANLEY. In presence of- R. G. OVERTON, J. D. HALL.

